随着汽车数量的迅猛增加，转向节的需求也随之上升，因此提高生产效率是至关重要的。
With the number of the automobile increasing rapidly, the requirements of knuckle ascend, therefore, it is vital important to increase the productive efficiency.
规模经济指这样一种现象，即随着企业生产规模或数量的增加，每增加一单位产出带来的平均成本递减。
Refers to the phenomenon where the average costs per unit of output decrease with the increase in the scale or magnitude of the output being produced by a firm.
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